Strain Ring with Radial Connector DSRC ST Features • Standard strain ring • Simple strain measurements on shafts, axles and cylinders • Installation without surface preparation • For tension, compression or torque measurements • For cyclical applications only, i.e. clamping force on presses Electrical Data Strain Gage Data Strain gage type Foil gages Bridge resistance at 24 °C 350 Ω 2 x quarter bridge Sensitivity at 24 °C Gage factor K= 2.00 ±0,5% (compensated with resistors) Temp. compensation Steel Transverse sensitivity nominal +0,7% Bridge circuit 2 x 1/4 bridge (see electrical connections) Mechanical Data Connection 6 pin female (Binder series 423) Material - Ring - Protective foil - Hinge - Screws Aluminum anodized Stainless steel Nitril M8 (torque 3 Nm) Environmental Conditions Surface quality Ra 3.2 (N8) or better Operating temp. range -10...+60 °C Storage temperature -40...+100 °C Protection class IP 54 3.4 Measuring range ±1000 µε (1 µε = 0,001 mm/m resp. 1 µε equals 0,001 mm strain per meter of shaft) Output signal per 1000 µε 1 mV/V (with completed full bridge) Combined error Linearity Hysteresis < 1% FS < 0,5% FS < 0,5% FS Repeatability < 0,2% FS Zero, bridge balance < ±200% FS (depending on installation). Since the gages are pressed-on, the bridge can have any arbitrary zero offset after the ring is mounted. Baumer amplifiers and display boxes are equipped with a reset function to tare this offset. The bridge should be reset before each measuring cycle. Excitation max. Recommended 9 VDC 5 VDC Signal polarity The signal polarity depends on the bridge circuit. In combination with Baumer amplifiers, the polarity is positive under tensile load. Rise time (10 - 90%)< 1 ms (on steel) www.baumer.com DSRC ST 41,1 M8 12,5 Dimensions (mm) ØD + 34 2 ...3 Ød ØD 3 4,1 37,1 Ø18 3.2 +0,1 Ø d = Ø D - 0,5 25 30,8 54 Ø D= Nominal diameter Ø d= Shaft diameter ε = Strain = Gage location Electrical Connections EXC.+ Bridge Circuit R Pin Assignment (per ring half) DMS S/G 22 C PinSignal 1S/G SIG.+ SIG.- 2 1 R S/G DMS1 1 Wiring Diagram 3 6 4 2S/G 5 3n.c. 4n.c. C 5n.c. 6n.c. EXC.- Amplifier DSRC Potential equalisation, low impedance www.baumer.com 3.5 Strain Ring with Radial Connector DSRC ST Typical Measuring Chains Order Code DSRC ST M/ Option /TOExecution for torsion measurement 2 x 1/4 S/G bridge 350 Ω, k = 2,00 4 Unit M Metric sizes 2 Nominal diameter* Metric (M) 1 020 025 028 030 035 038 040 045 048 3 Pos. QtyType Description 1 Standard strain ring 1 DSRC Type ST 2 1 DZCY 05-ST-WM-C Connecting cable for strain ring, 5 m 3 1 DDBF 2-SC 2-channel display box incl. power adapter 4 Torque wrench 1 DZMT TW-A1-6 050 053 055 060 065 070 075 080 085 090 095 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 180 185 190 195 200 205 220 225 230 240 250 260 270 300 335 350 360 * Other diameters available upon request 4 2 Accessories 1 3 Pos. QtyType Description 1 4 DSRC Typ ST Standard strain ring Torque wrench, range adjustable 1 - 6 Nm Order code: DZMT TW-A1-6 Torque wrench fix factory setting 3 Nm Order code: DZMT TW-F3 2 4 DZCY 05-ST-WM-C Connecting cable for strain ring, 5 m 3 1 DDBF 4-SC 4-channel display box incl. power cord and Analysis Software 4 Torque wrench 3.6 1 DZMT TW-A1-6 www.baumer.com DSRC ST Accessories Connecting Cable for display box and Bridge Amplifier Connecting Cable with Open Leads Binder Series 423 400 Binder Series 423 L 3 Binder Series 712 DZCY-ST-WM-C DZCY -ST-WO-C Length L 05 5 m 10 10 m Anschlusskabel mit offenem Ende Binder Series 712 Length L 05 5 m 10 10 m Wire Colors 3 2 4 1 grey white blue green brown yellow PinSignal Color Signal 1 S/G 1 grey S/G 1 2 S/G 1 white S/G 1 3 S/G 2 blue n.c. 4 S/G 2 green S/G 2 brown S/G 2 yellow n.c. Order Code DZCY -ST -C Length L 05 5 m 10 10 m 00 00 m Connection types WO right angle connector 6-pin open end WM right angle connector 6-pin / 4-pin straight connector (amplifier DDBF/DABU AD2T) www.baumer.com 3.7